The present study investigates the potential utilization of eucalyptus bark, an abundantly available agricultural waste, as a precursor for the synthesis of high surface area activated carbon. The activated carbon material is synthesized through a carbonization and activation process, followed by subsequent characterization using various analytical techniques. The synthesized activated carbon is evaluated for its effectiveness in removing methylene blue, a widely used textile dye and environmental pollutant. Batch adsorption experiments are conducted to assess the adsorption capacity and kinetics of methylene blue onto the eucalyptus bark-derived activated carbon. The results demonstrate the remarkable adsorption performance of the synthesized material, indicating its potential as a sustainable and cost-effective adsorbent for the removal of methylene blue from aqueous solutions.

Nitrogen vacancy (NV) centers in nanodiamonds have garnered significant interest for their applications in quantum sensing, imaging, and information processing. However, the ensemble brightness of NV centers is limited by surface-related effects, including surface defects and charge fluctuations, which can lead to unstable emission characteristics. This study aims to enhance the ensemble brightness and stability of NV centers in nanodiamonds through optimized surface composition. We investigate the impact of different surface modifications and treatments on the emission properties of NV centers. By carefully engineering the surface composition, we demonstrate a significant improvement in ensemble brightness while maintaining stable emission characteristics. The optimized surface composition minimizes surface defects and charge fluctuations, leading to enhanced photon collection efficiency and prolonged photon emission lifetimes. These findings provide valuable insights for the design and development of nanodiamond-based systems with improved quantum emission properties.

With the increasing integration of distributed generation (DG) resources in distribution networks, the voltage profile of these networks has become a critical aspect to be considered. This paper presents a comprehensive analysis of the effect of distributed generation on the voltage dynamics and profile of a distribution network. Various scenarios with different penetration levels and types of DG resources are simulated using advanced power system analysis tools. The voltage deviations and fluctuations caused by DG units are quantified, and the potential challenges and opportunities for voltage control are discussed. The study highlights the need for appropriate coordination and control strategies to ensure reliable and stable operation of distribution networks in the presence of distributed generation.

Dielectric properties play a crucial role in the performance of micro-composites used in various applications such as flexible electronics and energy storage devices. This study focuses on investigating the dielectric properties of micro-composites based on acrylic coated conducting carbon particles embedded in a silicone elastomer matrix. The acrylic coating enhances the dispersion and compatibility of the conducting carbon particles within the silicone elastomer, ensuring uniform distribution throughout the matrix. The dielectric properties, including the dielectric constant and loss tangent, are characterized over a range of frequencies and temperatures. The results reveal the tunability of the dielectric constant by adjusting the filler loading and coating thickness, enabling tailored electrical properties of the micro-composites. The low loss tangent indicates minimal energy dissipation and suggests the suitability of these micro-composites for applications requiring efficient dielectric materials.